internal override TimerThread.Timer CreateTimer(TimerThread.Callback callback, object context)
{
TimerThread.TimerNode node = new TimerThread.TimerNode(callback, context, base.Duration, this.m_Timers);
bool flag = false;
lock (this.m_Timers)
{
if (this.m_Timers.Next == this.m_Timers)
{
if (this.m_ThisHandle == IntPtr.Zero)
{
this.m_ThisHandle = (IntPtr)GCHandle.Alloc(this);
}
flag = true;
}
node.Next = this.m_Timers;
node.Prev = this.m_Timers.Prev;
this.m_Timers.Prev.Next = node;
this.m_Timers.Prev = node;
}
if (flag)
{
TimerThread.Prod();
}
return(node);
}
internal ServicePoint(Uri address, TimerThread.Queue defaultIdlingQueue, int defaultConnectionLimit, string lookupString, bool userChangedLimit, bool proxyServicePoint)
{
this.m_HostName = string.Empty;
this.m_ProxyServicePoint = proxyServicePoint;
this.m_Address = address;
this.m_ConnectionName = address.Scheme;
this.m_Host = address.DnsSafeHost;
this.m_Port = address.Port;
this.m_IdlingQueue = defaultIdlingQueue;
this.m_ConnectionLimit = defaultConnectionLimit;
this.m_HostLoopbackGuess = TriState.Unspecified;
this.m_LookupString = lookupString;
this.m_UserChangedLimit = userChangedLimit;
this.m_UseNagleAlgorithm = ServicePointManager.UseNagleAlgorithm;
this.m_Expect100Continue = ServicePointManager.Expect100Continue;
this.m_ConnectionGroupList = new Hashtable(10);
this.m_ConnectionLeaseTimeout = -1;
this.m_ReceiveBufferSize = -1;
this.m_UseTcpKeepAlive = ServicePointManager.s_UseTcpKeepAlive;
this.m_TcpKeepAliveTime = ServicePointManager.s_TcpKeepAliveTime;
this.m_TcpKeepAliveInterval = ServicePointManager.s_TcpKeepAliveInterval;
this.m_Understands100Continue = true;
this.m_HttpBehaviour = System.Net.HttpBehaviour.Unknown;
this.m_IdleSince = DateTime.Now;
this.m_ExpiringTimer = this.m_IdlingQueue.CreateTimer(ServicePointManager.IdleServicePointTimeoutDelegate, this);
}
internal void Close()
{
site.Close();
// Can't call AppDomain.Unload() from a user thread.
TimerThread.GetOrCreateQueue(0).CreateTimer(new TimerThread.Callback(CloseAppDomainCallback), appDomainIndex);
GC.SuppressFinalize(this);
}
internal ConnectionPool(System.Net.ServicePoint servicePoint, int maxPoolSize, int minPoolSize, int idleTimeout, CreateConnectionDelegate createConnectionCallback)
{
this.m_CreateConnectionCallback = createConnectionCallback;
this.m_MaxPoolSize = maxPoolSize;
this.m_MinPoolSize = minPoolSize;
this.m_ServicePoint = servicePoint;
this.Initialize();
if (idleTimeout > 0)
{
this.m_CleanupQueue = TimerThread.GetOrCreateQueue((idleTimeout == 1) ? 1 : (idleTimeout / 2));
this.m_CleanupQueue.CreateTimer(s_CleanupCallback, this);
}
}
internal bool Fire()
{
if (this.m_TimerState == TimerState.Ready)
{
int tickCount = Environment.TickCount;
if (TimerThread.IsTickBetween(base.StartTime, base.Expiration, tickCount))
{
return(false);
}
bool flag = false;
lock (this.m_QueueLock)
{
if (this.m_TimerState == TimerState.Ready)
{
this.m_TimerState = TimerState.Fired;
this.Next.Prev = this.Prev;
this.Prev.Next = this.Next;
this.Next = null;
this.Prev = null;
flag = this.m_Callback != null;
}
}
if (flag)
{
try
{
TimerThread.Callback callback = this.m_Callback;
object context = this.m_Context;
this.m_Callback = null;
this.m_Context = null;
callback(this, tickCount, context);
}
catch (Exception exception)
{
if (NclUtilities.IsFatal(exception))
{
throw;
}
if (Logging.On)
{
Logging.PrintError(Logging.Web, "TimerThreadTimer#" + base.StartTime.ToString(NumberFormatInfo.InvariantInfo) + "::Fire() - " + SR.GetString("net_log_exception_in_callback", new object[] { exception }));
}
}
}
}
return(true);
}
/// <summary>
/// <para>Constructor - binds pool with a servicePoint and sets up a cleanup Timer to nuke Idle Connections</para>
/// </summary>
internal ConnectionPool(ServicePoint servicePoint, int maxPoolSize, int minPoolSize, int idleTimeout, CreateConnectionDelegate createConnectionCallback) : base()
{
m_State = State.Initializing;
m_CreateConnectionCallback = createConnectionCallback;
m_MaxPoolSize = maxPoolSize;
m_MinPoolSize = minPoolSize;
m_ServicePoint = servicePoint;
Initialize();
if (idleTimeout > 0)
{
m_CleanupQueue = TimerThread.GetOrCreateQueue(idleTimeout / 2);
m_CleanupQueue.CreateTimer(s_CleanupCallback, this);
}
}
/// <summary>
/// <para>Creates new timers. This method is thread-safe.</para>
/// </summary>
internal override Timer CreateTimer(Callback callback, object context)
{
TimerNode timer = new TimerNode(callback, context, Duration, _timers);
// Add this on the tail. (Actually, one before the tail - _timers is the sentinel tail.)
bool needProd = false;
lock (_timers)
{
if (!(_timers.Prev.Next == _timers))
{
if (GlobalLog.IsEnabled)
{
GlobalLog.AssertFormat("TimerThread#{0}::CreateTimer()|Tail corruption.", Thread.CurrentThread.ManagedThreadId.ToString());
}
Debug.Fail(string.Format("TimerThread#{0}::CreateTimer()|Tail corruption.", Thread.CurrentThread.ManagedThreadId.ToString()));
}
// If this is the first timer in the list, we need to create a queue handle and prod the timer thread.
if (_timers.Next == _timers)
{
if (_thisHandle == IntPtr.Zero)
{
_thisHandle = (IntPtr)GCHandle.Alloc(this);
}
needProd = true;
}
timer.Next = _timers;
timer.Prev = _timers.Prev;
_timers.Prev.Next = timer;
_timers.Prev = timer;
}
// If, after we add the new tail, there is a chance that the tail is the next
// node to be processed, we need to wake up the timer thread.
if (needProd)
{
TimerThread.Prod();
}
return(timer);
}
internal ServicePoint(string host, int port, TimerThread.Queue defaultIdlingQueue, int defaultConnectionLimit, string lookupString, bool userChangedLimit, bool proxyServicePoint)
{
this.m_HostName = string.Empty;
this.m_ProxyServicePoint = proxyServicePoint;
this.m_ConnectionName = "ByHost:" + host + ":" + port.ToString(CultureInfo.InvariantCulture);
this.m_IdlingQueue = defaultIdlingQueue;
this.m_ConnectionLimit = defaultConnectionLimit;
this.m_HostLoopbackGuess = TriState.Unspecified;
this.m_LookupString = lookupString;
this.m_UserChangedLimit = userChangedLimit;
this.m_ConnectionGroupList = new Hashtable(10);
this.m_ConnectionLeaseTimeout = -1;
this.m_ReceiveBufferSize = -1;
this.m_Host = host;
this.m_Port = port;
this.m_HostMode = true;
this.m_IdleSince = DateTime.Now;
this.m_ExpiringTimer = this.m_IdlingQueue.CreateTimer(ServicePointManager.IdleServicePointTimeoutDelegate, this);
}
/// <summary>
/// <para>Constructor - binds pool with a servicePoint and sets up a cleanup Timer to remove Idle Connections</para>
/// </summary>
internal ConnectionPool(ServicePoint servicePoint, int maxPoolSize, int minPoolSize, int idleTimeout, CreateConnectionDelegate createConnectionCallback) : base()
{
m_State = State.Initializing;
m_CreateConnectionCallback = createConnectionCallback;
m_MaxPoolSize = maxPoolSize;
m_MinPoolSize = minPoolSize;
m_ServicePoint = servicePoint;
Initialize();
if (idleTimeout > 0)
{
// special case: if the timeout value is 1 then the timer thread should have a duration
// of 1 to avoid having the timer callback run constantly
m_CleanupQueue = TimerThread.GetOrCreateQueue(idleTimeout == 1 ? 1 : (idleTimeout / 2));
m_CleanupQueue.CreateTimer(s_CleanupCallback, this);
}
}
/// <summary>
/// <para>Creates new timers. This method is thread-safe.</para>
/// </summary>
internal override Timer CreateTimer(Callback callback, object context)
{
TimerNode timer = new TimerNode(callback, context, Duration, _timers);
// Add this on the tail. (Actually, one before the tail - _timers is the sentinel tail.)
bool needProd = false;
lock (_timers)
{
if (!(_timers.Prev.Next == _timers))
{
NetEventSource.Fail(this, $"Tail corruption.");
}
// If this is the first timer in the list, we need to create a queue handle and prod the timer thread.
if (_timers.Next == _timers)
{
if (_thisHandle == IntPtr.Zero)
{
_thisHandle = (IntPtr)GCHandle.Alloc(this);
}
needProd = true;
}
timer.Next = _timers;
timer.Prev = _timers.Prev;
_timers.Prev.Next = timer;
_timers.Prev = timer;
}
// If, after we add the new tail, there is a chance that the tail is the next
// node to be processed, we need to wake up the timer thread.
if (needProd)
{
TimerThread.Prod();
}
return(timer);
}
internal abstract TimerThread.Timer CreateTimer(TimerThread.Callback callback, object context);
/// <summary>
/// <para>Because this is called from the timer thread, neither it nor any methods it calls can call user code.</para>
/// </summary>
private void TimerCallback(TimerThread.Timer timer, int timeNoticed, object context) {
GlobalLog.Print("FtpWebRequest#" + ValidationHelper.HashString(this) + "::TimerCallback");
FtpControlStream connection = m_Connection;
if (connection != null) {
GlobalLog.Print("FtpWebRequest#" + ValidationHelper.HashString(this) + "::TimerCallback aborting connection");
connection.AbortConnect();
}
}
private static void InterruptCallback(TimerThread.Timer timer, int timeNoticed, object context)
{
AutoWebProxyScriptWrapper pThis = (AutoWebProxyScriptWrapper)context;
GlobalLog.Print("AutoWebProxyScriptWrapper#" + ValidationHelper.HashString(pThis) + "::InterruptCallback()");
if (!object.ReferenceEquals(timer, pThis.activeTimer))
{
GlobalLog.Print("AutoWebProxyScriptWrapper#" + ValidationHelper.HashString(pThis) + "::InterruptCallback() Spurious - returning.");
return;
}
EXCEPINFO exceptionInfo;
try
{
pThis.jscript.InterruptScriptThread(pThis.interruptThreadId, out exceptionInfo, 0);
}
catch (Exception ex)
{
if (NclUtilities.IsFatal(ex)) throw;
GlobalLog.Print("AutoWebProxyScriptWrapper#" + ValidationHelper.HashString(pThis) + "::InterruptCallback() InterruptScriptThread() threw:" + ValidationHelper.ToString(ex));
}
catch {
GlobalLog.Print("AutoWebProxyScriptWrapper#" + ValidationHelper.HashString(pThis) + "::InterruptCallback() InterruptScriptThread() threw: Non-CLS Compliant Exception");
}
}
private static void IdleServicePointTimeoutCallback(TimerThread.Timer timer, int timeNoticed, object context)
{
ServicePoint servicePoint = (ServicePoint) context;
if (Logging.On) Logging.PrintInfo(Logging.Web, SR.GetString(SR.net_log_closed_idle,
"ServicePoint", servicePoint.GetHashCode()));
lock (s_ServicePointTable)
{
s_ServicePointTable.Remove(servicePoint.LookupString);
}
servicePoint.ReleaseAllConnectionGroups();
}
private static void CancelErrorCallbackWrapper(TimerThread.Timer timer, int timeNoticed, object context)
{
((ConnectionPool) context).CancelErrorCallback();
}
private static void CleanupCallbackWrapper(TimerThread.Timer timer, int timeNoticed, object context)
{
ConnectionPool pThis = (ConnectionPool) context;
try
{
pThis.CleanupCallback();
}
finally
{
pThis.m_CleanupQueue.CreateTimer(s_CleanupCallback, context);
}
}
internal void Close()
{
this.site.Close();
TimerThread.GetOrCreateQueue(0).CreateTimer(new TimerThread.Callback(AutoWebProxyScriptWrapper.CloseAppDomainCallback), this.appDomainIndex);
GC.SuppressFinalize(this);
}
private void CreateAppDomain()
{
bool lockTaken = false;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
Monitor.Enter(s_AppDomains.SyncRoot, ref lockTaken);
if (s_CleanedUp)
{
throw new InvalidOperationException(SR.GetString("net_cant_perform_during_shutdown"));
}
if (s_AppDomainInfo == null)
{
s_AppDomainInfo = new AppDomainSetup();
s_AppDomainInfo.DisallowBindingRedirects = true;
s_AppDomainInfo.DisallowCodeDownload = true;
NamedPermissionSet permSet = new NamedPermissionSet("__WebProxySandbox", PermissionState.None);
permSet.AddPermission(new SecurityPermission(SecurityPermissionFlag.Execution));
ApplicationTrust trust = new ApplicationTrust {
DefaultGrantSet = new PolicyStatement(permSet)
};
s_AppDomainInfo.ApplicationTrust = trust;
s_AppDomainInfo.ApplicationBase = Environment.SystemDirectory;
}
AppDomain context = s_ExcessAppDomain;
if (context != null)
{
TimerThread.GetOrCreateQueue(0).CreateTimer(new TimerThread.Callback(AutoWebProxyScriptWrapper.CloseAppDomainCallback), context);
throw new InvalidOperationException(SR.GetString("net_cant_create_environment"));
}
this.appDomainIndex = s_NextAppDomainIndex++;
try
{
}
finally
{
PermissionSet grantSet = new PermissionSet(PermissionState.None);
grantSet.AddPermission(new SecurityPermission(SecurityPermissionFlag.Execution));
s_ExcessAppDomain = AppDomain.CreateDomain("WebProxyScript", null, s_AppDomainInfo, grantSet, null);
try
{
s_AppDomains.Add(this.appDomainIndex, s_ExcessAppDomain);
this.scriptDomain = s_ExcessAppDomain;
}
finally
{
if (object.ReferenceEquals(this.scriptDomain, s_ExcessAppDomain))
{
s_ExcessAppDomain = null;
}
else
{
try
{
s_AppDomains.Remove(this.appDomainIndex);
}
finally
{
TimerThread.GetOrCreateQueue(0).CreateTimer(new TimerThread.Callback(AutoWebProxyScriptWrapper.CloseAppDomainCallback), s_ExcessAppDomain);
}
}
}
}
}
finally
{
if (lockTaken)
{
Monitor.Exit(s_AppDomains.SyncRoot);
}
}
}
internal override TimerThread.Timer CreateTimer(TimerThread.Callback callback, object context)
{
TimerThread.TimerNode node = new TimerThread.TimerNode(callback, context, base.Duration, this.m_Timers);
bool flag = false;
lock (this.m_Timers)
{
if (this.m_Timers.Next == this.m_Timers)
{
if (this.m_ThisHandle == IntPtr.Zero)
{
this.m_ThisHandle = (IntPtr) GCHandle.Alloc(this);
}
flag = true;
}
node.Next = this.m_Timers;
node.Prev = this.m_Timers.Prev;
this.m_Timers.Prev.Next = node;
this.m_Timers.Prev = node;
}
if (flag)
{
TimerThread.Prod();
}
return node;
}
internal TimerNode(TimerThread.Callback callback, object context, int durationMilliseconds, object queueLock) : base(durationMilliseconds)
{
if (callback != null)
{
this.m_Callback = callback;
this.m_Context = context;
}
this.m_TimerState = TimerState.Ready;
this.m_QueueLock = queueLock;
}
// TimeoutCallback - Called by the TimerThread to abort a request. This just posts ThreadPool work item - Abort() does too
// much to be done on the timer thread (timer thread should never block or call user code).
private static void TimeoutCallback(TimerThread.Timer timer, int timeNoticed, object context)
{
ThreadPool.UnsafeQueueUserWorkItem(s_AbortWrapper, context);
}
// This can never call into user code or block, because it's called by the TimerThread.
private static void ContinueTimeoutCallback(TimerThread.Timer timer, int timeNoticed, object context)
{
GlobalLog.Enter("HttpWebRequest#" + ValidationHelper.HashString(context) + "::ContinueTimeoutCallback");
GlobalLog.ThreadContract(ThreadKinds.Unknown, ThreadKinds.SafeSources | ThreadKinds.Timer, "HttpWebRequest#" + ValidationHelper.HashString(context) + "::ContinueTimeoutCallback");
HttpWebRequest thisHttpWebRequest = (HttpWebRequest) context;
if (thisHttpWebRequest.HttpWriteMode == HttpWriteMode.None)
{
GlobalLog.Assert("HttpWebRequest#" + ValidationHelper.HashString(thisHttpWebRequest) + "::CompleteContinueGate()", "Not a POST type request, must not come here.");
return;
}
// Complete the 100 Continue gate. If this completes it then it is safe to re/upload the data.
// Otherwise we already received a continue/response.
if (!(thisHttpWebRequest.FinishContinueWait() && thisHttpWebRequest.CompleteContinueGate()))
{
return;
}
//
// We have to put it on a threadpool thread since it may call user code. This is not
// a critical path for perf.
ThreadPool.UnsafeQueueUserWorkItem(s_EndWriteHeaders_Part2Callback, thisHttpWebRequest);
GlobalLog.Leave("HttpWebRequest#" + ValidationHelper.HashString(thisHttpWebRequest) + "::ContinueTimeoutCallback");
}
private static void IdleServicePointTimeoutCallback(TimerThread.Timer timer, int timeNoticed, object context)
{
ServicePoint servicePoint = (ServicePoint) context;
lock (s_ServicePointTable)
{
s_ServicePointTable.Remove(servicePoint.LookupString);
}
servicePoint.ReleaseAllConnectionGroups();
}
private void CreateAppDomain()
{
// Locking s_AppDomains must happen in a CER so we don't orphan a lock that gets taken by AppDomain.DomainUnload.
bool lockHeld = false;
RuntimeHelpers.PrepareConstrainedRegions();
try
{
Monitor.Enter(s_AppDomains.SyncRoot, ref lockHeld);
if (s_CleanedUp)
{
throw new InvalidOperationException(SR.GetString(SR.net_cant_perform_during_shutdown));
}
// Create singleton.
if (s_AppDomainInfo == null)
{
s_AppDomainInfo = new AppDomainSetup();
s_AppDomainInfo.DisallowBindingRedirects = true;
s_AppDomainInfo.DisallowCodeDownload = true;
NamedPermissionSet perms = new NamedPermissionSet("__WebProxySandbox", PermissionState.None);
perms.AddPermission(new SecurityPermission(SecurityPermissionFlag.Execution));
ApplicationTrust trust = new ApplicationTrust();
trust.DefaultGrantSet = new PolicyStatement(perms);
s_AppDomainInfo.ApplicationTrust = trust;
s_AppDomainInfo.ApplicationBase = Environment.SystemDirectory;
}
// If something's already in s_ExcessAppDomain, try to dislodge it again.
AppDomain excessAppDomain = s_ExcessAppDomain;
if (excessAppDomain != null)
{
TimerThread.GetOrCreateQueue(0).CreateTimer(new TimerThread.Callback(CloseAppDomainCallback), excessAppDomain);
throw new InvalidOperationException(SR.GetString(SR.net_cant_create_environment));
}
appDomainIndex = s_NextAppDomainIndex++;
try { }
finally
{
PermissionSet permissionSet = new PermissionSet(PermissionState.None);
permissionSet.AddPermission(new SecurityPermission(SecurityPermissionFlag.Execution));
//
s_ExcessAppDomain = AppDomain.CreateDomain(c_appDomainName, null, s_AppDomainInfo, permissionSet, null);
try
{
s_AppDomains.Add(appDomainIndex, s_ExcessAppDomain);
// This indicates to the finally and the finalizer that everything succeeded.
scriptDomain = s_ExcessAppDomain;
}
finally
{
// ReferenceEquals has a ReliabilityContract.
if (object.ReferenceEquals(scriptDomain, s_ExcessAppDomain))
{
s_ExcessAppDomain = null;
}
else
{
// Something failed. Leave the domain in s_ExcessAppDomain until we can get rid of it. No
// more AppDomains can be created until we do. In the mean time, keep attempting to get the
// TimerThread to remove it. Also, might as well remove it from the hash if it made it in.
try
{
s_AppDomains.Remove(appDomainIndex);
}
finally
{
// Can't call AppDomain.Unload from a user thread (or in a lock).
TimerThread.GetOrCreateQueue(0).CreateTimer(new TimerThread.Callback(CloseAppDomainCallback), s_ExcessAppDomain);
}
}
}
}
}
finally
{
if (lockHeld)
{
Monitor.Exit(s_AppDomains.SyncRoot);
}
}
}
// Downloads and compiles the script from a given Uri.
// This code can be called by config for a downloaded control, we need to assert.
// This code is called holding the lock.
private AutoWebProxyState DownloadAndCompile(Uri location)
{
GlobalLog.Print("NetWebProxyFinder#" + ValidationHelper.HashString(this) + "::DownloadAndCompile() location:" + ValidationHelper.ToString(location));
AutoWebProxyState newState = AutoWebProxyState.DownloadFailure;
WebResponse response = null;
TimerThread.Timer timer = null;
AutoWebProxyScriptWrapper newScriptInstance = null;
// Can't assert this in declarative form (DCR?). This Assert() is needed to be able to create the request to download the proxy script.
ExceptionHelper.WebPermissionUnrestricted.Assert();
try
{
lock (lockObject)
{
if (aborted)
{
throw new WebException(NetRes.GetWebStatusString("net_requestaborted",
WebExceptionStatus.RequestCanceled), WebExceptionStatus.RequestCanceled);
}
request = WebRequest.Create(location);
}
request.Timeout = Timeout.Infinite;
request.CachePolicy = new RequestCachePolicy(RequestCacheLevel.Default);
request.ConnectionGroupName = "__WebProxyScript";
// We have an opportunity here, if caching is disabled AppDomain-wide, to override it with a
// custom, trivial cache-provider to get a similar semantic.
//
// We also want to have a backup caching key in the case when IE has locked an expired script response
//
if (request.CacheProtocol != null)
{
GlobalLog.Print("NetWebProxyFinder#" + ValidationHelper.HashString(this) + "::DownloadAndCompile() Using backup caching.");
request.CacheProtocol = new RequestCacheProtocol(backupCache, request.CacheProtocol.Validator);
}
HttpWebRequest httpWebRequest = request as HttpWebRequest;
if (httpWebRequest != null)
{
httpWebRequest.Accept = "*/*";
httpWebRequest.UserAgent = this.GetType().FullName + "/" + Environment.Version;
httpWebRequest.KeepAlive = false;
httpWebRequest.Pipelined = false;
httpWebRequest.InternalConnectionGroup = true;
}
else
{
FtpWebRequest ftpWebRequest = request as FtpWebRequest;
if (ftpWebRequest != null)
{
ftpWebRequest.KeepAlive = false;
}
}
// Use no proxy, default cache - initiate the download.
request.Proxy = null;
request.Credentials = Engine.Credentials;
// Use our own timeout timer so that it can encompass the whole request, not just the headers.
if (timerQueue == null)
{
timerQueue = TimerThread.GetOrCreateQueue(SettingsSectionInternal.Section.DownloadTimeout);
}
timer = timerQueue.CreateTimer(timerCallback, request);
response = request.GetResponse();
// Check Last Modified.
DateTime lastModified = DateTime.MinValue;
HttpWebResponse httpResponse = response as HttpWebResponse;
if (httpResponse != null)
{
lastModified = httpResponse.LastModified;
}
else
{
FtpWebResponse ftpResponse = response as FtpWebResponse;
if (ftpResponse != null)
{
lastModified = ftpResponse.LastModified;
}
}
GlobalLog.Print("NetWebProxyFinder#" + ValidationHelper.HashString(this) + "::DownloadAndCompile() lastModified:" + lastModified.ToString() + " (script):" + (scriptInstance == null ? "(null)" : scriptInstance.LastModified.ToString()));
if (scriptInstance != null && lastModified != DateTime.MinValue && scriptInstance.LastModified == lastModified)
{
newScriptInstance = scriptInstance;
newState = AutoWebProxyState.Completed;
}
else
{
string scriptBody = null;
byte[] scriptBuffer = null;
using (Stream responseStream = response.GetResponseStream())
{
SingleItemRequestCache.ReadOnlyStream ros = responseStream as SingleItemRequestCache.ReadOnlyStream;
if (ros != null)
{
scriptBuffer = ros.Buffer;
}
if (scriptInstance != null && scriptBuffer != null && scriptBuffer == scriptInstance.Buffer)
{
scriptInstance.LastModified = lastModified;
newScriptInstance = scriptInstance;
newState = AutoWebProxyState.Completed;
GlobalLog.Print("NetWebProxyFinder#" + ValidationHelper.HashString(this) + "::DownloadAndCompile() Buffer matched - reusing Engine.");
}
else
{
using (StreamReader streamReader = new StreamReader(responseStream))
{
scriptBody = streamReader.ReadToEnd();
}
}
}
WebResponse tempResponse = response;
response = null;
tempResponse.Close();
timer.Cancel();
timer = null;
if (newState != AutoWebProxyState.Completed)
{
GlobalLog.Print("NetWebProxyFinder#" + ValidationHelper.HashString(this) + "::DownloadAndCompile() IsFromCache:" + tempResponse.IsFromCache.ToString() + " scriptInstance:" + ValidationHelper.HashString(scriptInstance));
if (scriptInstance != null && scriptBody == scriptInstance.ScriptBody)
{
GlobalLog.Print("NetWebProxyFinder#" + ValidationHelper.HashString(this) + "::DownloadAndCompile() Script matched - using existing Engine.");
scriptInstance.LastModified = lastModified;
if (scriptBuffer != null)
{
scriptInstance.Buffer = scriptBuffer;
}
newScriptInstance = scriptInstance;
newState = AutoWebProxyState.Completed;
}
else
{
GlobalLog.Print("NetWebProxyFinder#" + ValidationHelper.HashString(this) + "::DownloadAndCompile() Creating AutoWebProxyScriptWrapper.");
newScriptInstance = new AutoWebProxyScriptWrapper();
newScriptInstance.LastModified = lastModified;
if (newScriptInstance.Compile(location, scriptBody, scriptBuffer))
{
newState = AutoWebProxyState.Completed;
}
else
{
newState = AutoWebProxyState.CompilationFailure;
}
}
}
}
}
catch (Exception exception)
{
if (Logging.On)
{
Logging.PrintWarning(Logging.Web, SR.GetString(SR.net_log_proxy_script_download_compile_error, exception));
}
GlobalLog.Print("NetWebProxyFinder#" + ValidationHelper.HashString(this) + "::DownloadAndCompile() Download() threw:" + ValidationHelper.ToString(exception));
}
finally
{
if (timer != null)
{
timer.Cancel();
}
//
try
{
if (response != null)
{
response.Close();
}
}
finally
{
WebPermission.RevertAssert();
// The request is not needed anymore. Set it to null, so if Abort() gets called,
// after this point, it will result in a no-op.
request = null;
}
}
if ((newState == AutoWebProxyState.Completed) && (scriptInstance != newScriptInstance))
{
if (scriptInstance != null)
{
scriptInstance.Close();
}
scriptInstance = newScriptInstance;
}
GlobalLog.Print("NetWebProxyFinder#" + ValidationHelper.HashString(this) + "::DownloadAndCompile() retuning newState:" + ValidationHelper.ToString(newState));
return(newState);
}
// This can never call into user code or block, because it's called by the TimerThread.
private static void ContinueTimeoutCallback(TimerThread.Timer timer, int timeNoticed, object context)
{
GlobalLog.Enter("HttpWebRequest#" + ValidationHelper.HashString(context) + "::ContinueTimeoutCallback");
GlobalLog.ThreadContract(ThreadKinds.Unknown, ThreadKinds.SafeSources | ThreadKinds.Timer, "HttpWebRequest#" + ValidationHelper.HashString(context) + "::ContinueTimeoutCallback");
HttpWebRequest thisHttpWebRequest = (HttpWebRequest) context;
if (thisHttpWebRequest.HttpWriteMode == HttpWriteMode.None)
{
GlobalLog.Assert("HttpWebRequest#" + ValidationHelper.HashString(thisHttpWebRequest) + "::CompleteContinueGate()", "Not a POST type request, must not come here.");
return;
}
// Complete the 100 Continue gate. If this completes it, clean up the timer.
if (thisHttpWebRequest.CompleteContinueGate())
{
GlobalLog.Assert(thisHttpWebRequest.m_ContinueTimer == timer, "HttpWebRequest#{0}::ContinueTimeoutCallback|Timers don't match.", ValidationHelper.HashString(thisHttpWebRequest));
thisHttpWebRequest.m_ContinueTimer = null;
}
// Always call this. Otherwise the timer should have been successfully cancelled.
//
// We have to put it on a threadpool thread since it may call user code. This is not
// a critical path for perf.
ThreadPool.UnsafeQueueUserWorkItem(s_EndWriteHeaders_Part2Callback, thisHttpWebRequest);
GlobalLog.Leave("HttpWebRequest#" + ValidationHelper.HashString(thisHttpWebRequest) + "::ContinueTimeoutCallback");
}
private BaseWebProxyFinder.AutoWebProxyState DownloadAndCompile(Uri location)
{
BaseWebProxyFinder.AutoWebProxyState downloadFailure = BaseWebProxyFinder.AutoWebProxyState.DownloadFailure;
WebResponse response = null;
TimerThread.Timer timer = null;
AutoWebProxyScriptWrapper scriptInstance = null;
ExceptionHelper.WebPermissionUnrestricted.Assert();
try
{
lock (this.lockObject)
{
if (this.aborted)
{
throw new WebException(NetRes.GetWebStatusString("net_requestaborted", WebExceptionStatus.RequestCanceled), WebExceptionStatus.RequestCanceled);
}
this.request = WebRequest.Create(location);
}
this.request.Timeout = -1;
this.request.CachePolicy = new RequestCachePolicy(RequestCacheLevel.Default);
this.request.ConnectionGroupName = "__WebProxyScript";
if (this.request.CacheProtocol != null)
{
this.request.CacheProtocol = new RequestCacheProtocol(this.backupCache, this.request.CacheProtocol.Validator);
}
HttpWebRequest request = this.request as HttpWebRequest;
if (request != null)
{
request.Accept = "*/*";
request.UserAgent = base.GetType().FullName + "/" + Environment.Version;
request.KeepAlive = false;
request.Pipelined = false;
request.InternalConnectionGroup = true;
}
else
{
FtpWebRequest request2 = this.request as FtpWebRequest;
if (request2 != null)
{
request2.KeepAlive = false;
}
}
this.request.Proxy = null;
this.request.Credentials = base.Engine.Credentials;
if (timerQueue == null)
{
timerQueue = TimerThread.GetOrCreateQueue(SettingsSectionInternal.Section.DownloadTimeout);
}
timer = timerQueue.CreateTimer(timerCallback, this.request);
response = this.request.GetResponse();
DateTime minValue = DateTime.MinValue;
HttpWebResponse response2 = response as HttpWebResponse;
if (response2 != null)
{
minValue = response2.LastModified;
}
else
{
FtpWebResponse response3 = response as FtpWebResponse;
if (response3 != null)
{
minValue = response3.LastModified;
}
}
if (((this.scriptInstance != null) && (minValue != DateTime.MinValue)) && (this.scriptInstance.LastModified == minValue))
{
scriptInstance = this.scriptInstance;
downloadFailure = BaseWebProxyFinder.AutoWebProxyState.Completed;
}
else
{
string scriptBody = null;
byte[] buffer = null;
using (Stream stream = response.GetResponseStream())
{
SingleItemRequestCache.ReadOnlyStream stream2 = stream as SingleItemRequestCache.ReadOnlyStream;
if (stream2 != null)
{
buffer = stream2.Buffer;
}
if (((this.scriptInstance != null) && (buffer != null)) && (buffer == this.scriptInstance.Buffer))
{
this.scriptInstance.LastModified = minValue;
scriptInstance = this.scriptInstance;
downloadFailure = BaseWebProxyFinder.AutoWebProxyState.Completed;
}
else
{
using (StreamReader reader = new StreamReader(stream))
{
scriptBody = reader.ReadToEnd();
}
}
}
WebResponse response4 = response;
response = null;
response4.Close();
timer.Cancel();
timer = null;
if (downloadFailure != BaseWebProxyFinder.AutoWebProxyState.Completed)
{
if ((this.scriptInstance != null) && (scriptBody == this.scriptInstance.ScriptBody))
{
this.scriptInstance.LastModified = minValue;
if (buffer != null)
{
this.scriptInstance.Buffer = buffer;
}
scriptInstance = this.scriptInstance;
downloadFailure = BaseWebProxyFinder.AutoWebProxyState.Completed;
}
else
{
scriptInstance = new AutoWebProxyScriptWrapper {
LastModified = minValue
};
if (scriptInstance.Compile(location, scriptBody, buffer))
{
downloadFailure = BaseWebProxyFinder.AutoWebProxyState.Completed;
}
else
{
downloadFailure = BaseWebProxyFinder.AutoWebProxyState.CompilationFailure;
}
}
}
}
}
catch (Exception exception)
{
if (Logging.On)
{
Logging.PrintWarning(Logging.Web, SR.GetString("net_log_proxy_script_download_compile_error", new object[] { exception }));
}
}
finally
{
if (timer != null)
{
timer.Cancel();
}
try
{
if (response != null)
{
response.Close();
}
}
finally
{
CodeAccessPermission.RevertAssert();
this.request = null;
}
}
if ((downloadFailure == BaseWebProxyFinder.AutoWebProxyState.Completed) && (this.scriptInstance != scriptInstance))
{
if (this.scriptInstance != null)
{
this.scriptInstance.Close();
}
this.scriptInstance = scriptInstance;
}
return(downloadFailure);
}
private static void CloseAppDomainCallback(TimerThread.Timer timer, int timeNoticed, object context)
{
try
{
AppDomain domain = context as AppDomain;
if (domain == null)
{
CloseAppDomain((int) context);
}
else
{
if (object.ReferenceEquals(domain, s_ExcessAppDomain))
{
try
{
AppDomain.Unload(domain);
}
catch (AppDomainUnloadedException) { }
s_ExcessAppDomain = null;
}
}
}
catch (Exception exception)
{
if (NclUtilities.IsFatal(exception)) throw;
}
}
//
// constructors
//
internal ServicePoint(Uri address, TimerThread.Queue defaultIdlingQueue, int defaultConnectionLimit, string lookupString, bool userChangedLimit, bool proxyServicePoint) {
GlobalLog.Print("ServicePoint#" + ValidationHelper.HashString(this) + "::.ctor(" + lookupString+")");
if (Logging.On) Logging.Enter(Logging.Web, this, "ServicePoint", address.DnsSafeHost + ":" + address.Port);
m_ProxyServicePoint = proxyServicePoint;
m_Address = address;
m_ConnectionName = address.Scheme;
m_Host = address.DnsSafeHost;
m_Port = address.Port;
m_IdlingQueue = defaultIdlingQueue;
m_ConnectionLimit = defaultConnectionLimit;
m_HostLoopbackGuess = TriState.Unspecified;
m_LookupString = lookupString;
m_UserChangedLimit = userChangedLimit;
m_UseNagleAlgorithm = ServicePointManager.UseNagleAlgorithm;
m_Expect100Continue = ServicePointManager.Expect100Continue;
m_ConnectionGroupList = new Hashtable(10);
m_ConnectionLeaseTimeout = System.Threading.Timeout.Infinite;
m_ReceiveBufferSize = -1;
m_UseTcpKeepAlive = ServicePointManager.s_UseTcpKeepAlive;
m_TcpKeepAliveTime = ServicePointManager.s_TcpKeepAliveTime;
m_TcpKeepAliveInterval = ServicePointManager.s_TcpKeepAliveInterval;
// it would be safer to make sure the server is 1.1
// but assume it is at the beginning, and update it later
m_Understands100Continue = true;
m_HttpBehaviour = HttpBehaviour.Unknown;
// upon creation, the service point should be idle, by default
m_IdleSince = DateTime.Now;
m_ExpiringTimer = m_IdlingQueue.CreateTimer(ServicePointManager.IdleServicePointTimeoutDelegate, this);
m_IdleConnectionGroupTimeoutDelegate = new TimerThread.Callback(IdleConnectionGroupTimeoutCallback);
}
/// <summary>
/// <para>Because this is called from the timer thread, neither it nor any methods it calls can call user code.</para>
/// </summary>
private void TimerCallback(TimerThread.Timer timer, int timeNoticed, object context)
{
if (GlobalLog.IsEnabled)
{
GlobalLog.Print("FtpWebRequest#" + LoggingHash.HashString(this) + "::TimerCallback");
}
FtpControlStream connection = _connection;
if (connection != null)
{
if (GlobalLog.IsEnabled)
{
GlobalLog.Print("FtpWebRequest#" + LoggingHash.HashString(this) + "::TimerCallback aborting connection");
}
connection.AbortConnect();
}
}
private void IdleConnectionGroupTimeoutCallback(TimerThread.Timer timer, int timeNoticed, object context) {
ConnectionGroup connectionGroup = (ConnectionGroup)context;
if (Logging.On) Logging.PrintInfo(Logging.Web, this, SR.GetString(SR.net_log_closed_idle,
"ConnectionGroup", connectionGroup.GetHashCode()));
ReleaseConnectionGroup(connectionGroup.Name);
}
private void TimerCallback(TimerThread.Timer timer, int timeNoticed, object context)
{
FtpControlStream connection = this.m_Connection;
if (connection != null)
{
connection.AbortConnect();
}
}
internal ServicePoint(string host, int port, TimerThread.Queue defaultIdlingQueue, int defaultConnectionLimit, string lookupString, bool userChangedLimit, bool proxyServicePoint) {
GlobalLog.Print("ServicePoint#" + ValidationHelper.HashString(this) + "::.ctor(" + lookupString+")");
if (Logging.On) Logging.Enter(Logging.Web, this, "ServicePoint", host + ":" + port);
m_ProxyServicePoint = proxyServicePoint;
m_ConnectionName = "ByHost:"+host+":"+port.ToString(CultureInfo.InvariantCulture);
m_IdlingQueue = defaultIdlingQueue;
m_ConnectionLimit = defaultConnectionLimit;
m_HostLoopbackGuess = TriState.Unspecified;
m_LookupString = lookupString;
m_UserChangedLimit = userChangedLimit;
m_ConnectionGroupList = new Hashtable(10);
m_ConnectionLeaseTimeout = System.Threading.Timeout.Infinite;
m_ReceiveBufferSize = -1;
m_Host = host;
m_Port = port;
m_HostMode = true;
// upon creation, the service point should be idle, by default
m_IdleSince = DateTime.Now;
m_ExpiringTimer = m_IdlingQueue.CreateTimer(ServicePointManager.IdleServicePointTimeoutDelegate, this);
m_IdleConnectionGroupTimeoutDelegate = new TimerThread.Callback(IdleConnectionGroupTimeoutCallback);
}
/// <summary>
/// <para>Because this is called from the timer thread, neither it nor any methods it calls can call user code.</para>
/// </summary>
private void TimerCallback(TimerThread.Timer timer, int timeNoticed, object context)
{
if (NetEventSource.IsEnabled) NetEventSource.Info(this);
FtpControlStream connection = _connection;
if (connection != null)
{
if (NetEventSource.IsEnabled) NetEventSource.Info(this, "aborting connection");
connection.AbortConnect();
}
}
internal override TimerThread.Timer CreateTimer(TimerThread.Callback callback, object context)
{
return new TimerThread.InfiniteTimer();
}
